For a flawless completed look to your fireplace or firebox, it is recommended that the gas burner system is designed to go with your specific appliance. Most quality fireplaces and fireboxes will have proprietary burner systems available. In addition to a guaranteed perfect fit, efficient operation and proprietary safety features, they will be designed to enhance the overall looks of the fireplace. When investing in a quality fireplace or firebox, it is usually wise to consider a proprietary burner system.